1, direct method: also known as common law, refers to the method of directly using retrieval systems (tools) to retrieve literature information. It is also divided into sequential investigation, reverse investigation and spot check.
2. Follow-up retrieval method: Follow-up retrieval method refers to the method of searching literature information from far to near in time sequence by using retrieval system. This method can collect systematic documents of a certain discipline and is suitable for document retrieval of larger disciplines. For example, if we know the initial age of a subject and need to know the whole process of its development, we can use the sequential search method to search from the initial age.
3. Backward retrieval method: Backward retrieval method is a method to retrieve documents from near to far, from new to old and in reverse time sequence by using retrieval tools. Using this method, you can get the latest information as soon as possible.
4. Spot-check method: Spot-check method refers to selecting the most likely or most likely time period of document information related to the project according to the characteristics of the project, and using retrieval tools for key retrieval.
5. Traceability method: It refers to the method of tracing the source text (cited literature) one by one by using the references listed at the back of the literature without using the general retrieval system, and then expanding the scope of literature information one by one from the references listed at the back of these original texts to trace the source one by one. It can snowball and get better retrieval results according to the citation relationship between documents.
6. Circular method: also known as subsection method or comprehensive method. It uses direct method and backtracking method alternately in stages to learn from each other's strong points and cooperate with each other to obtain better retrieval results.
Extended data:
File retrieval function:
1, reporting literature information
The retrieval system has the function of revealing, reflecting and reporting literature information. Only by using the document retrieval system can information users timely understand and systematically master a large number of information generated and updated at any time.
2. Store literature information
By purposefully storing a large number of scattered and disordered original documents and organizing them according to certain characteristics and laws, a document retrieval system covering all ages, carriers and disciplines has been formed.
3. Literature information retrieval
By reporting and storing information, a large amount of information is sorted according to appearance characteristics and content characteristics, and convenient and efficient information retrieval is realized. This is the most prominent function of the document retrieval system.
Computer retrieval:
The method of literature retrieval by using computer technology and modern retrieval means such as CD-ROM and Internet. Computer information retrieval, like manual retrieval, should be regarded as a basic skill of future scientific and technological personnel, and the training and cultivation of this ability is extremely important for scientific and technological personnel to adapt to the future society and cross-century scientific research.
A researcher who is good at obtaining documents from electronic information systems must have more chances of success than those who do not have this ability. The American periodical POV, which reports the new lifestyle, also regards interactive network retrieval as one of the top ten hot jobs in the future. All these indicate that computer document retrieval is becoming more and more important, so it is worth paying attention to this technology.
Baidu Encyclopedia-Literature Retrieval